Sources:

CVS archive

If you are a programmer, you can use the CVS archive, allowing you to get
the current (unstable) version and have your personal version with CVS
automatic updating (cvs update) when changes are done.

Quick directions for use, under your shell:

$ cvs -d :pserver:anoncvs@camlcvs.inria.fr:/caml login
(Logging in to anoncvs@camlcvs.inria.fr)
CVS password: (hit the enter key)
$ cvs -d :pserver:anoncvs@camlcvs.inria.fr:/caml co -P geneweb
It creates a directory named "geneweb".
Later, in that directory, to get the current version do:
$ cvs up -dP